Access to mobile networks is now available to 90% of the world population

"By the end of 2010, there will be an estimated 5.3 billion mobile cellular subscriptions worldwide, including 940 million subscriptions to 3G services.
Access to mobile networks is now available to 90% of the world population and 80% of the population living in rural areas.
People are moving rapidly from 2G to 3G platforms, in both developed and developing countries.
In 2010, 143 countries were offering 3G services commercially, compared to 95 in 2007.
Towards 4G: a number of countries have started to offer services at even higher broadband speeds, moving to next generation wireless platforms – they include Sweden, Norway, Ukraine and the United States."
Source:  The World in 2010, ITU, October 2010 (pdf)